From: Marcel Hellwig <mhellwig@mut-group.com>
To: 'Eric Dumazet' <eric.dumazet@gmail.com>,
"'davem@davemloft.net'" <davem@davemloft.net>,
"'kuznet@ms2.inr.ac.ru'" <kuznet@ms2.inr.ac.ru>,
"'yoshfuji@linux-ipv6.org'" <yoshfuji@linux-ipv6.org>,
"'andrew@lunn.ch'" <andrew@lunn.ch>
Cc: "'netdev@vger.kernel.org'" <netdev@vger.kernel.org>,
"'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>,
"Matthias Wystrik" <mwystrik@mut-group.com>
Subject: AW: AW: PROBLEM: Kernel Oops in UDP stack
Date: Wed, 1 Aug 2018 10:35:51 +0000 [thread overview]
Message-ID: <9f9d731107594b368504cbbaf698bc3d@ZCOM03.mut-group.com> (raw)
In-Reply-To: <96753ca4-88fe-aa26-b439-6e22eaf8b524@gmail.com>
>> [<c0228adc>] (udp_recvmsg+0x284/0x33c) from [<c02306e0>] (inet_recvmsg+0x38/0x4c): net/ipv4/udp.c:1234
>
> sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
>
>Unaligned access trap (virtual address c14fe63a), so either sin or ip_hdr(skb) are not on a 32bit alignment
>
>Can you produce the disassembly of the trapping instruction ?
https://gist.github.com/hellow554/6b11c6c0827d5db80a7e66f71f5636ff#file-net_uipv4_udp-lst-L1892-L1895
sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
c0228ad8: e5943080 ldr r3, [r4, #128] ; 0x80
c0228adc: e593300c ldr r3, [r3, #12]
c0228ae0: e5823004 str r3, [r2, #4]
Mit freundlichen Grüßen / With kind regards
Marcel Hellwig
B. Sc. Informatik
Entwickler
m-u-t GmbH
Am Marienhof 2
22880 Wedel
Germany
Phone: +49 4103 9308 - 474
Fax: +49 4103 9308 - 99
mhellwig@mut-group.com
www.mut-group.com
Geschäftsführer (Managing Director): Fabian Peters
Amtsgericht Pinneberg (Commercial Register No.): HRB 10304 PI
USt-IdNr. (VAT-No.): DE228275390
WEEE-Reg-Nr.: DE 72271808
next prev parent reply other threads:[~2018-08-01 10:35 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-31 15:06 Marcel Hellwig
2018-07-31 15:59 ` Eric Dumazet
2018-08-01 5:55 ` AW: " Marcel Hellwig
2018-08-01 10:20 ` Eric Dumazet
2018-08-01 10:35 ` Marcel Hellwig [this message]
2018-08-01 10:44 ` AW: " Paolo Abeni
2018-08-01 10:49 ` Eric Dumazet
2018-08-01 11:25 ` Eric Dumazet
2018-08-01 11:31 ` AW: " Marcel Hellwig
2018-08-01 13:27 ` Marcel Hellwig
2018-08-02 11:02 ` Marcel Hellwig
2018-08-02 13:05 ` Eric Dumazet
2018-08-02 9:17 ` David Laight
2018-08-02 13:13 ` Eric Dumazet
2018-08-02 13:18 ` David Laight
2018-08-02 13:57 ` AW: " Marcel Hellwig
2018-08-02 15:07 ` Eric Dumazet
2018-08-03 8:24 ` AW: " Marcel Hellwig
2018-08-07 13:42 ` Marcel Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9f9d731107594b368504cbbaf698bc3d@ZCOM03.mut-group.com \
--to=mhellwig@mut-group.com \
--cc=andrew@lunn.ch \
--cc=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=kuznet@ms2.inr.ac.ru \
--cc=linux-kernel@vger.kernel.org \
--cc=mwystrik@mut-group.com \
--cc=netdev@vger.kernel.org \
--cc=yoshfuji@linux-ipv6.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome